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See my previous email. However, you can not use 1st level F-tests as the inputs into the 2nd level analysis. Best Regards, Donald McLaren ================= D.G. McLaren, Ph.D. Research Fellow, Department of Neurology, Massachusetts General Hospital and Harvard Medical School Postdoctoral Research Fellow, GRECC, Bedford VA Website: http://www.martinos.org/~mclaren Office: (773) 406-2464 ===================== This e-mail contains CONFIDENTIAL INFORMATION which may contain PROTECTED HEALTHCARE INFORMATION and may also be LEGALLY PRIVILEGED and which is intended only for the use of the individual or entity named above. If the reader of the e-mail is not the intended recipient or the employee or agent responsible for delivering it to the intended recipient, you are hereby notified that you are in possession of confidential and privileged information. Any unauthorized use, disclosure, copying or the taking of any action in reliance on the contents of this information is strictly prohibited and may be unlawful. If you have received this e-mail unintentionally, please immediately notify the sender via telephone at (773) 406-2464 or email. On Tue, Aug 12, 2014 at 12:22 PM, SUBSCRIBE SPM Jiang Sisi < [log in to unmask]> wrote: > Thank you very much.but I have another question here.Why in SPM ,contrast > of T test has only one row such as (-1 1),but Ftest can have many rows such > as (1 0 0 > 0 1 0 > 0 0 1) > and I feel very confused about how to make a correct contrast for Ftest? > For example,I have 20 subjects ,everyone have done a task with 3 > conditions:rest,0back and 2back.When specify 1st level,I would like to do > an Ftest to know all brainregions activated.Could you tell me how to make > this contrast of Ftest? > > Thanks a lot! > > sisi > >